Performance bug in 3.2.6 involving shared folders on Mac

[Adam]

Host:

• System Version: Mac OS X 10.6.4 (10F569)
• 64-bit Kernel and Extensions: No

Guest:

• Base mem: 566MB
• Video mem: 24MB
• VT-x: Enabled
• Nested Paging: Enabled
• Network Adapter: PCnet-FAST III (NAT)
• USB: 0
• Serial: Disabled

VirtualBox 3.2.6 r63112

I shared my home folder to a Windows XP guest. CPU on mac host at 63% with windows guest idle, even with VBox window minimized. After unsharing folder, cpu use back to ~ 8%

[jfzed]

I do have a share among the host, Mac OS 10.6.4 and both Ubuntu.64 and Windows.7.64; it works fine and does not seem to place impact on CPU as described here.

However, changing from 3.2.4 to 3.2.6 I noticed a poor performance in MS Windows.7.64; Ubuntu.64 runs much better.

Just my input to the support team: performance on 3.2.6 seems in my case, noticeable worse than previously under 3.2.4 and earlier distributions.